Rotary valve.



M. A. TIPS.

ROTARY VALVE. APPLICATION FILED JAN- 19. 1 913.

snow wot 3 SHEETS-SHEET I Patented N 0v. 26, 1918.

attozneali;

M. A. TIPS.

ROTARY VALVE. APPLICATION HLED JAN-19. 19i8.

' 1,286,149. Patented Nov. 26,1918.

3 SHEETS-SHEET 2- L MZIYZZZ/ZZZJFJ I M. A. ms. ROTARY VALVE.

APPLICATION FILED JAN. 19. 191B- Patnted Nov. 26, 1918.

3 SHEETSSHEET 3.

M72261 as gwuenfoz UNITED STATES PATENT OFFICE.

MAURICE A. TIPS, OF WOONSOCKET, RHODE ISLAND, ASSIGNOR TO TIPS AEROMOTOR COMPANY, INC., OF WOONSOCKET, RHODE ISLAND, A CORPORATION OF RHODEISLAND.

ROTARY VALVE.

To all whom it may (011mm Be it known that I, MAURICE A. TIPS, a subjectoi the King of Belgium, and a resident of \l'oonsocket. in the county ofProvidence and State of 'Rhode. Island, have invented new and usefulImprovements in R0- tary Valves. of which the following is aspecification.

My invention relates to rotary valves and has particular reference tothat class of valves adapted for use in connection with internalcombustion engines of the rotating cylinder type although not restrictedto such use. i

An important object of the invention is to provide in a valve of theabove mentioned character a means whereby the valve as a whole may beefliciently cooled at all times regardless of the varying conditionsunder which it will be required to operate.

A further object of the invention is to provide in a valve of the abovementioned charactor a means whereby what is commonly known as stickingof the valve as a result of expansion during its period of actuationwill be entirely eliminated.

Another object of the invention is to provide in a valve of the abovementioned character a wear compensating means wherebya perfect seatingof the valve may be main tained at all times.

A further object of the invention is to provide in a valve of the abovementioned character a means whereby sufficiently large intake andexhaust ports may be employed to obtain. the highest possible efiiciencyfrom an engine with which the valve is particularly adapted to be used.

A further object is to provide a valve of the above mentioned characterso constructed as to permit the valve to be readily placed into orremoved from operating position. i

Other objects and advantages of the invention will be apparent from thefollowing description.

This application is a division of my application filed October 11. 1917,for internal Specification of Letters Patent.

-Patented Nov. 26, 1918.

Divided and this application filed January 19,

combustion engine, Serial Number 195,898.

In the accompanying drawings forming a part of this specification andinwhich like numerals are employed to designate like parts throughoutthe same Figure 1 is a fragmontal transverse sectional view of an engineembodying the preferred form of my invention,

Fig. 2 is a vertical central sect onal view of avalve,

Fig. 3 is a horizontal sectional view of Fig. 4, I

Fig. it is a fragmental longitudinal sectional view of a valve,

Fig. 5 is a horizontal sectional view of Fig. 2 taken on line 55,

Fig. (3 is a fragmental transverse sectional view of an engine embodyinga modified form of my invention, and,

Fig. 7 is a vertical central sectional view of a valve embodying amodified form of my invention.

In the drawings, attention being called to Figs. 1 to 5 inclusivewherein is shown a preferred form of my invention, the numeral 10indicates a cylinder block or casting of the rotating type provided witha plurality of cylinders arranged in pairs,'a pair of which are shown inFig. l and indicated by the numerals 11 and 12. The cylinder block orcasting 10 is provided with suitable water spaces 13 surrounding each ofthe cylinders, as shown for the purpose of insuring perfect cooling ofthe same. Between each pair of cylinders there is arranged a rotaryvalve indicated as a whole by the numeral 1%. This valve comprises anelongated hollow portion 15, one end of which is provided with aplurality of openings 16 and carries a stem 17 preferably formedintegral therewith and provided with screw-threads indicated by thenumerals 18. The upper portion of the valve 14 is slightly tapered asshown at 19, this tapered portion being provided with a water jacket 20having communication with the water space 13 carried by the cylinderblock or casting 10. The water jacket 20 is adap,

ed to seat upon a tapered sleeve 21 suitably serured within the cylinderblock or casting 10. For the purpose of insuring self lubrication to thevalve during its period of actuation a plurality of graphite spots 23are provided which are carried within the sleeve 21. I

A flanged ring 2+1 is carried by the cylinder block or casting 10 and isretained in engagement therewith by means of screw- .threads as shown at25. This ring is adapted to be run down into engagement with the sleeve21 in order to retain the same in position within the cylinder block orcasting 10. Upon the upper portion 20 of the water jacket 20 there isdisposed a wear ring 26 adapted to receive thereupon a ball-thrustbearing 27 which in turn is adapted to receive a second wear ring 28upon which is disposed a compression ring 29 having a depending flange30. This depending flange 30 at its lower edge is turned slightlyoutwardly as shown at 31 and the outwardly turned portion is adapted toreceive thereupon a plurality of compressible springs 32 havingengagement at one end thereof with the flanged ring as shown.

It will be noted that a gas chamber 33 is provided within the cylinderblock or casting 10, the same being connected to a manifold 34: by asuitable passage 35 provided within the cylinder block or casting 10. Inorder to prevent a communication between the water space 13 and the gaschamber 33 there is provided a suitable packing 36 carried by theelongated portion 15 of the valve 14.

A bevel gear 37 having an elongated sleeve 38 provided with internalscrew-threads 39 adapted to engage the screw-threads 18 is looselymounted upon the stem. 17 and adapted for engagement with a masterdriving gear-40 actuated by the crank shaft, not shown, of an internalcombustion engine. The sleeve 38 is provided at one end thereof with anannular fiange 11 as shown and is adapted to rotate within a journal 42carried within the cylinder block or casting 10. This ournal or bearingis preferably formed of two semi-circular halves which are placed uponthe sleeve 38 in order to permit the sleeve 38, carrying the bevel gear37, to be readily placed in the position clearly shown in Figs. 1 and 2.

The upper or enlarged end of the valve 14 is provided with diametricallyopposed openings 43 43 and 4A44, the openings 43--"i3 havingconnnunication with elongated portion 15 of the valve andserve to directthe QXi'dOSlYQ charge into the cylinders 11 and through the openings orports 45 and 46 respectively, while the openings i i-44k open directlyinto the opened end 47 of the valve and serve to direct the spent gasesfrom the cylinders 11 and 12 directly .into the atmosphere through theopenings or ports 45 and 46 respectively;

In considering Figs. 6 and 7 wherein is shown a modified form of myinvention itis to be understood that the several elements employedtherein and designated by like numerals to those used in describingFigs.

1 to 5 inclusive have not been materially 'with and an annularscrew-threaded ring 2st has been substituted therefor, which ring isprovided upon its periphery with screwthreads having engagement with thecylinder block or casting 10 as shown at 25. In this instance theannular ring 24 serves only as a means for retaining the tapered sleeve21 in position within the cylinder block or casting 10 as shown. Uponthe elongated hollow portion 15 of the valve there is formed a flange 48which is encircled by a screw-threaded sleeve 49 having screw-threadengagement with the cylinder block or casting 10 as shown at 50. Thisscrew-threaded sleeve is provided with a sub stantially deep depressionor groove 51 carrying therein a coil spring 52, the lower end of whichis maintained in engagement with an annular ring 53 positioned upon aplurality of ball-bearings 54 imposed upon an annular ring 55 carried bya screw-threaded ring 56 maintained in'screw-thread engagement with theelongated hollow portion 15 of the valve as shown at 57. It will benoted that a cavity 58 is formed between the elongated hollow portion 15of the valve and the screw-threaded sleeve 49. This cavity is adapted toreceive therein a suitable packing indicated by the numeral 59, whichpacking is retained therein by means of a beveled face annular ring 60,which ring is retained in position by means of a coil spring 61 imposedupon a shoulder 62 carried by the elongated hollow portion 15 of thevalve as shown. It will be readily understood that the beveled faceannular ring together with the spring 61 having engagement thercwithserves as a means for not only retaining the packing 59 within thecavity 58 but also as a means for maintaining it in a compressedcondition. Between the screwthreaded sleeve 49 and the cylinder block orcasting 10 there is interposed a suitable packing ring'63, which packingring together with the packing 59 serves to prevent communicationbetween the water Space 13 and the gas chamber 33..

In use, the operation of the device is as follows: ()n the intake strokethe valve 14:

will be moved to such a position as will bring the openings i i- 3 intoregistration with the ports 45 and. it whereupon the gaseous mixture.will enter the gas chamber 33 from the manifold 'll through the passage35. passing into the elongated portion 15 ot' the valve through theopening 16. whereupon it will be directed into the cylinders l1 and 112-trom the valve through the openings 45 and 4t; respectively. At thecompletion of the intake stroke the openings tlii3 will be moved out. ofregistration with the openings 45 and 4t and these openings, l5 and to,will remain closed during the compression and working strokes, but atthe completion of the working stroke the openings ll4t will be broughtinto registration with the ports 45 and it) whereupon the spent gaseswill be directed from the cylinders 11 and 12 through the openings 4%-Hinto the opening 47 and thence directly into the atmosphere. Should thevalve H, due to the heat created by the plosion ot the gaseous mixturewithin the cylinders become expanded, which expansion would tend toproduce a sticking of the. valve. 1. the valve in its entirety would beslightly litted due to the cam action of the threads -39, carried by thesleeve 33. upon the threads 18 'arried by the stem 17. This cam action,itis to be'understood, is produced during the actuation of the valve andas a rcsult ot the engagement between the bevel gear 37 and the masterdriving gear 40.

From the foregoing description of the modified form of my inventiontaken in connection with the disclosure thereof it. is apparen that theoperation of the valve. as a whole is substantially the same as that ofthe preferred form of my invention, which operation may be readilyunderstood when considering the hereinbeforc de scribed structure of thesame together with the hereinbefore described operation of the preferredform of my invention.

It is to be understood that. various changes in the shape, size andarrangement of parts may be resorted to without departing from thespirit of the invention or the scope of the subjoined claims.

Having thus described my invention, what 1 claim as new and desire tosecure and protect by Letters Patent of the United States, is:

1. In a valve for internal combustion engines, the combination with aplurality of engine cylinders adapted for simultaneous cycle function, adistributingvalve member adapted to rotate between the. cylinders andcarrying a set of symmetrically disposed inlet ports and a set. ofsymmetrically disposed exhaust ports, each set of ports being adapted tosimultaneously register wan ports in the walls oi the cylinders.yielding means adapted to force said tapered member in the direction ofits axis, and driving means for said tapered member whereby the same islifted against said yielding means when the tree rotation of the rotarymember is prevented. I

Z. In a valve for internal combustion engines. the combination with aplurality of engine cylinders adapted for simultaneous cycle function. adistributing valve member adapted to rotate between the cylinders andcarrying a set of symmetrically disposed inletports and a set ofsymmetrically disposed cx haust ports, each set of ports being adaptedto simultaneously register with ports in the walls. of the cylinders,resilient means adapted to force said tapered member in the direction ofits axis. and driving means for said tapered member comprising ascrewthreaded projection on the end of said tapered member and a gearmounted on said screw-threaded projection, said screwthread beingadapted to lift the tapered valve member against the yielding means whenthe free rotation of the rotary member .is prevented.

3. In a valve for a prime mover, the combination wlth a pair oi enginecylinders adapted for simultaneous cycle function and having a gaschamber arranged therebetween, of a (.listributing valve. adapted torotate between the cylinders. said valve comprising a hollow portioncommunicating with the gas chamber. a tapered portion communicating withthe hollow portion and carrying a set of symmetrically disposed inletports and a set of symmetrically disposed exhaust ports, the intakeportsbeingadaptcd to simultaneously register with ports carried by thecylinder to connnunicate the gas chamber and cylinders, the exhaustports being adapted to simultaneously register with the ports carried bythe cylinders to direct. exhaust gases from the same directly into theatmosphere, yielding means adapted to force said tapered portion in thedirection of its axis, and driving means for said tapered portionwhereby the. same is lifted against the yielding means when the freerotation of the tapered portion is prevented.

4. In a valve for a prime mover, the combination with a pair of enginecylinders adapted for simultaneous cycle function and having a gaschamber arranged therebetween, each of, said cylinders being surroundedby :1; water space, of a distributing valve. adapted to rotate betweenthe cylin dcrs, said valve comprising a hollow portion communicatingwith the gas chamber, a tapered portion communicating with the hollowportion and carrying a set of symmetrically disposed inlet ports and aset of symmetrically disposed exhaust ports, the intake ports beingadapted to simultaneously register with ports carried by the cylindersto communicate the gas chamber and cylinders, the exhaust ports beingadapted to simultaneously reg'ster with the ports carried by thecylinders to direct exhaust gases from the same directly into theatmosphere, a casing carried by the tapered portion and spacedtherefrom, the space afforded between the tapered portion and the casingbeing in communication with the water space surrounding said cylinders.

Q 5. In a valve for internal combustion its axis, and driving means forsaid valve member whereby. the same is lifted against said resilientmeans when the free rotation of the valve member is prevented.

6. In a valve for a prime mover. the combination with a plurality ofengine cylinders having a water space arranged therebetween, of a rotarydistributing valve, said valve comprising a tapered member carrying aset of synnnetrically disposed exhaust ports and a set of symmetricallydisposed inlet ports, each set of ports being adapted to simultaneouslyregister with ports in the walls of the cylinders, a casing carried bysaid tapered member and spaced therefrom, the -asing being secured atone end to the tapered member and disengaged therefrom at its other endto establish direct Communication between the water space and the spaceati'ordcd between the tapered member and the casing.

7. In a valve for a prime mover, the combination with a plurality ofengine cylinders having a water space arranged thereb'etween, of arotary distributing valve, said valve comprising a tapered membercarrying a set of symmetrically disposed exhaust ports and a set ofsymmetrically disposed inlet ports, each set of ports being adapted tosimultaneously register with ports in the walls of the cylinders, acasing carried by said tapered member and spaced therefrom, the casingbeing secured at' one end to the tapered member and disengaged therefromat its other end to establish direct communication between the waterspace and the space afforded between the tapered member and the casing,resilient means adapted to force said taperedmember in the direction ofits aXiS, and means for rotating said tapered member whereby the same islifted against the yielding means when the free rotation of thetaperedmember is prevented.

8. In a valve for a prime mover, the combination with a pair of enginecylinders adapted for simultaneous cycle function and having a gaschamber arranged therebetween, of a distributing valve adapted to 1'0-tate between the cylinders, said valve comprising a hollow portion, atapered portion communicating with the hollow portion and carrying a setof symmetrically disposed inlet ports and a set of symmetricallydisposed exhaust ports, the intake ports being adapted to simultaneouslyregister with ports carried by the cylinders to communicate the gaschamber and cylinders, the exhaust ports being adapted to simultaneouslyregister with the ports carried by the cylinders to direct exhaust gasesfrom the same, yielding means interposed between said gas'chamber andsaid tapered member said yielding means being adapted to force saidtapered member and hollow portion in the direction of an axis common toboth the tapered member and hollow portion, and drivingmea-ns for saidtapered member and hollow portion whereby said tapered member is liftedagainst said yielding means when the free rotation of the tapered memberis'prevented.

9. In a valve for a prime mover, the combination with a pair of enginecylinders having a gas chamber and a water space arranged therebet-ween,of a rotary distributing valve, said valve comprising a hollow portionhaving one end arranged within the water space and its other endarranged within the gas chamber and communicating therewith, the hollowportion being adapted to contact with the water confined within thewater space, packing means surmunding said hollow portion to preventcommunication between the water space and gas chamber. yielding meansadapted to force the hollow portion in the direction of its axis. andyielding means whereby said valve is lifted against said yielding meanswhen the free rotation of the valve is prevented.

10. In a valve for a prime mover, the com bination with a pair of enginecylinders having a gas chamber and a water space arranged therebetween,of a rotary distributing valve. said valve comprising a hollow portionhaving one cnd arranged within the water space and its other endarranged within the gas chamber and communicating therewith. the hollowportion being adapted to contact with the water confined within thewater space. packing means surrounding said hollow portion to preventcommunication between-the watcr space and gas. chamber, a taperedportion communicating ith the hollow portion and carrying a set ofsymmetrically disposed inlet ports and a set of symmetrically disposedexhaust ports,

the intake ports being adapted to simultavneously register with portscarried by the cylinders to communicate the gas Chambers and cylinders,the exhaust ports being adapted to simultaneously register with theports 7 carried by the cylinders to direct exhaust 'gases from the samedirectly into the at mosphere, yielding means adapted to force 10 thevalve in the direction of its axis, and driving means whereby said valveis lifted against said yielding means vwhen the free rotation of thevalve is prevented.

MAURICE A. TIPS.

